Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1      pound         potatoes -- (3 medium)
   6      slices        bacon -- diced
   1                    medium-size onion -- diced
     1/2  cup           vinegar
     1/2  cup           stock or bouillon
   1      tsp.          salt
     1/4  tsp.          pepper
   1      tsp.          sugar
   1                    egg yolk -- beaten

Preparation:

Scrub potatoes; rinse. Boil in jackets; let cool. Peel and cut in 1/4-inch slices. Cook bacon in hot pan until crisp. Add onion; stir and cook until transparent. Add vinegar, stock or bouillon, and seasonings. Stir; let come to a boil. Stir in egg; remove from heat and pour over potatoes.